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102 lines
2.8 KiB
Go
102 lines
2.8 KiB
Go
// Licensed to the LF AI & Data foundation under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package flowgraph
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import (
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"github.com/milvus-io/milvus/pkg/mq/msgstream"
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)
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// Msg is an abstract class that contains a method to get the time tick of this message
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type Msg interface {
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TimeTick() Timestamp
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IsClose() bool
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}
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type BaseMsg struct {
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isCloseMsg bool
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}
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func (msg BaseMsg) IsCloseMsg() bool {
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return msg.isCloseMsg
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}
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func NewBaseMsg(isCloseMsg bool) BaseMsg {
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return BaseMsg{
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isCloseMsg: isCloseMsg,
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}
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}
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// MsgStreamMsg is a wrapper of TsMsg in flowgraph
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type MsgStreamMsg struct {
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BaseMsg
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tsMessages []msgstream.TsMsg
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timestampMin Timestamp
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timestampMax Timestamp
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startPositions []*MsgPosition
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endPositions []*MsgPosition
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}
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// GenerateMsgStreamMsg is used to create a new MsgStreamMsg object
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func GenerateMsgStreamMsg(tsMessages []msgstream.TsMsg, timestampMin, timestampMax Timestamp, startPos []*MsgPosition, endPos []*MsgPosition) *MsgStreamMsg {
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return &MsgStreamMsg{
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tsMessages: tsMessages,
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timestampMin: timestampMin,
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timestampMax: timestampMax,
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startPositions: startPos,
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endPositions: endPos,
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}
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}
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// TimeTick returns the timetick of this message
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func (msMsg *MsgStreamMsg) TimeTick() Timestamp {
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return msMsg.timestampMax
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}
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func (msMsg *MsgStreamMsg) IsClose() bool {
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return msMsg.isCloseMsg
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}
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// DownStreamNodeIdx returns 0
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func (msMsg *MsgStreamMsg) DownStreamNodeIdx() int {
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return 0
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}
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// TsMessages returns the origin TsMsg object list
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func (msMsg *MsgStreamMsg) TsMessages() []msgstream.TsMsg {
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return msMsg.tsMessages
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}
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// TimestampMin returns the minimal timestamp in the TsMsg list
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func (msMsg *MsgStreamMsg) TimestampMin() Timestamp {
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return msMsg.timestampMin
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}
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// TimestampMax returns the maximal timestamp in the TsMsg list
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func (msMsg *MsgStreamMsg) TimestampMax() Timestamp {
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return msMsg.timestampMax
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}
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// StartPositions returns the start position of TsMsgs
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func (msMsg *MsgStreamMsg) StartPositions() []*MsgPosition {
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return msMsg.startPositions
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}
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// EndPositions returns the end position of TsMsgs
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func (msMsg *MsgStreamMsg) EndPositions() []*MsgPosition {
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return msMsg.endPositions
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}
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